Envelop.



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sierras essere;

Lewis c. ven wenn, or o HcAGo; runners, .essie-non 'ro smeer nnvnnorn'comenzar on omesso, immens, s. conrcnarion or scorn; nnsora.

To all -wzom t may concern:

Ee it known that l, Lewis C. Ven .Emmy a citizencf the United- States,residing? at lai-s, price lists, or tlie like. An example of this typeof envelop is illustrated in Letters Pateiitllo 941,392, vrantecl to meNovembei' 30, 1909, and in Letters Patent No.

- 958,785, granted to the-Bright Manufacturingv Company, as' myassignee, May 24, 191%... l ln this vclass of envelops,"-tl-ieconstruction must be suoli as to securely retain tlie printf ed matterduring its transmission through the mails and yet permit the envelop tobe.

opened for the purpose of inspection.

The obj ect of vtice present invention. is primarily to provide a moresecure interlock for the inspection flap of the envelop, i. e., the flapwhich iste be Withdraivn to permit inspection bv the postal authoritiesof the contents of the envelop. The venvelop is` hereinafterlescriloeil, illustrated in the accompanying drawing and particularlypointed out in, the claims `at the enel of this A specication.

Figure ,.1 1s -a-plan view of my envelop in unfolded position. Fig. Q-isa 'View with the. parte (partially folded. Fig. 3 isaJieW of the envelopcomplete. Fig. l is e: View in Vvertical cross-section through the`envelop on line fe-l oli 3, this section being shown upon an enlargedscale.

.lily improved enlvelop is shown coinprising aT front portion l, sidella-ps 2 and The eide flaps anni 3, when olcied over upon tlie inner offront l, constitute the oaolr. portion of tlic envelop. Prelieraoly.,tire si1 flaps ere forni/eel ivitli siip-` pleinental flaps il end 3fwhich, when folileel over upon elle liaps 2 and 3, seri/e 'to reinforceand strengthen the edges of 'tlie flaps.

,ln the present construction, as in the con1 Y struction set Avforth inthe before mentioned Specicetior. o Letters Estant ling flap l alici eninspection Patenteilleb. 9., ligl appiiesoon fue@ angst-a een. serialno. einem.

L2Letters Patent, a su plemental strip 5 ex-f tends across the ineriorof 'the body ol? v the envelop adjacent :the inspection ap 3 and thisstrip cooperates with the aps il and 3 in forming e pocket to receivethe unsealed inspection flap 5 of tieenvelop. In the construction oenvelop sliowninthe alcove mentioned patents, tl'lemet'ention ol theprnitecl matter witliin tliejenvelop was effected by merel] tuclingkthe5.,inspectioii liep 5 Within the pocket V:formeel between the .sideflaps 2.anfl 3 and the supplemental strip The main purpose of tliepresentinvention is to provide means oiiletacli ably interlocking theinspection' lap Wit-nin the pocket after it llas been inserted tlieren.

inthe preferredv form. oit' the invention illustrated in -tlie drawing.,the inspection Hapv 5 has one oi? its enclscutqeway sini provided with atongue 5?. "flic enfl et the Tf;

inspection liap is narrowed or ont upon a taper along the line so thatwhen the 'flap 5i is turnecl to closed position, the edge of the willnot be enposefl The face et the'snpplcinentelstrip tl is s 'liown as providedvivitli or likearllie'sive materiel at 6, and; preferably, thisaliesive materiel is extended along a cursori line 5 to approxivmatelythe inner edge oi tlre'strip 6. A

ln forming" envelop, the supplemental flaps 2"* and' 3B Will'lirst ceiolcle'don to the flops 2 end 8, pectvely, and then tliese 2 ami will neoldeil over on to the snpplementalstrip 6, as inclioateliin Fig,

mental'strip 6 has a line .oli adhesive ma terial' extending over'itsinner erige-and, if desired, also extending as 6G partially along itsside edges; and, when the llaps and 3 are turned over on to thesupplemental strip 6, they will be securelj,VT vconnected to thesupplemental strip by 'the adhesive material upon the faceltlierepf. Theedge otono of the flaps, as for example, the flap Se will Toe provideclwith adhesive material7 to unite this Hap 2 to the flap 3 when the flapsare in l'oltleei position.

lfzfoin tlie foregoing' description it will foe seen? reference beingliacl parioularljf to #l of the elrawing, that when the flaps lievebeen. folded on, to tlier supplemental n anni have been seale'clthereto. as above described. e pocket will be formeel between thesupplementel strip i' cnil the flaps 2 anni ,3 to receive the inspectionlap 5 and `this of the drawing. Preferably, tliel supplel ico ' will bereadilyr understood, however,

' pocket.

` spectionsuch pocket, as clearly shown in Fig. a of the drawings. Wheithe inspection `flap is inserted within the pocket, the tongue 5 ofthisfla Will enter behind the gunnned point 6 at W ich the supplementalstrip 6 adheres to the Hap 2, and the tongue in such sition will fornian interlock which will e ectively serve to prevent the accidentalWithdrawal f the inspection flap from the pocket. It"

postal ins ector can easil withdraw the inap when it' is esired to viewthe contents of the envelop. In WithdrawimT the inspection Hap, itshould be move initially in the direction of the arrow shown by Fig. 3of the drawinguntil the tongue 5 is out of the pocket formed by thegummed point 6, after which the flap can be drawn straight outward inthe usual avay. Anv tendency of the contents of the envelop to forceopen the flap will be exerted at right angles to the length of theinspection flap G, and, consequently, will be resisted by theinterlocking tongue 5 of the Hap.

Inasmuch as the supplemental strip 6 is gummed to the back portion ofthe envelop as at 6, the pocket between the supplemental strip and` theinspection flap is thus formed with a contracted mouth which serves toresist the accidental withdrawal of the laterally projecting tongue 5 ofthe inspection Hap. when suc tongue has been placed Within the It isobvious that the recise details above set forth may be varied) Withoutdeparting from the spirit of the invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. An envelop comprising a front portion havin integral, opposite sideflaps overlappe andr united, and having also an integrai top closureiiap and an integral bottom inspetion flap, said bottom inspection oneof its lateral side edges cut flap` having that the;

mames away to form a laterally projecting tongue at its inner end, and aseparate interior strip united tosaid side flaps at portions extend`-`ing along both of the opposite sidevedges of said inspection flap tothereby form a pocket With a contracted mouth for receiving saidinspection flap with the inner end and tongue of the latter extendingthrough and interlocked With the contracted mouth of the pocket,substantially as described.` y 2. An envelop comprising a front, havingan integral top closure Hap, an integral bottorn inspection Hap andopposite side flaps overlapped and united, sai bottoni inspection flaphaving inclined side edges one of which is cut away to form a laterallyprojecting tongue at its inner end and a separate i terior strip unitedto said side flaps along portions extending about the end and both ofthe (pposite side edges of said inspection flap. an a pocket with acontracted mouth for'receiw ing said inspection Hap with its inner endand tongue extending' through and interf locked with the contractedmouth portion of the pocket, substantially as described.

3. An envelop comprising a front portion having integral opposite sideaps overlapped and united, andliaving also an inabout said tongue tothereby form tegral top closure fla and an integral bottom inspectionflap, sai bottonrinspection flap having one of its lateral side edgescut away LEWIS C. VN RIPER.

Witnesses:

Gso. P. FISHER, KATHARINE Gunmen;

